<template>
  <div class="app-container">

    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="课程名" prop="coursename">
        <el-input
          v-model="queryParams.coursename"
          placeholder="请输入课程名"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="教师名" prop="name">
        <el-input
          v-model="queryParams.name"
          placeholder="请输入教师名"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="班级名称" prop="claName">
        <el-input
          v-model="queryParams.claName"
          placeholder="请输入班级名称"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="开班日期" prop="openDate">
        <el-date-picker clearable
          v-model="queryParams.openDate"
          type="date"
          value-format="yyyy-MM-dd"
          placeholder="请选择开班日期">
        </el-date-picker>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['system:cla:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['system:cla:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['system:cla:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['system:cla:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="claList" @selection-change="handleSelectionChange">

      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="班级名称" align="center" prop="claName" />
      <el-table-column label="教师名" align="center" prop="name" />
      <el-table-column label="课程名" align="center" prop="coursename" />
      <el-table-column label="人数" align="center" prop="capacity" />
      <el-table-column label="每次上课学生扣除课时" align="center" prop="everyStuLoseHour" />
      <el-table-column label="开班日期" align="center" prop="openDate" width="180">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.openDate, '{y}-{m}-{d}') }}</span>
        </template>
      </el-table-column>

      <el-table-column label="结班日期" align="center" prop="closeDate" width="180">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.closeDate, '{y}-{m}-{d}') }}</span>
        </template>
      </el-table-column>
      <el-table-column label="备注" align="center" prop="memo" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['system:cla:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['system:cla:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改课程班级信息对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">

        <el-form-item label="课程" prop="courseId">
          <el-select
            v-model="form.courseId"
            filterable
            allow-create
            placeholder="选择课程"
            clearable
            default-first-option
            @change="handleStudentChange"
          >
            <el-option
              v-for="course in courseOptions"
              :key="course.courseid"
              :label="course.coursename"
              :value="course.courseid"
            />
          </el-select>
        </el-form-item>

        <el-form-item label="班级名称" prop="claName">
          <div class="input-with-color-picker-container">
            <el-input v-model="form.claName" placeholder="请输入班级名称" />
            <el-tooltip class="item" effect="dark" content="选择班级颜色,便于课表中区分各班级" placement="right">
              <el-color-picker v-model="form.claColor" :predefine="colorArray" />
            </el-tooltip>
          </div>
        </el-form-item>


        <el-row>
          <el-col :span="12">
        <el-form-item label="任课教师" prop="staffId">
          <el-select
            v-model="form.staffId"
            filterable
            allow-create
            placeholder="选择上课教师"
            clearable
            default-first-option
          >
            <el-option
              v-for="teacher in teacherOptions"
              :key="teacher.id"
              :label="teacher.name"
              :value="teacher.id"
            />
          </el-select>
        </el-form-item>
          </el-col>

        <el-col :span="12">
          <el-form-item label="每次扣减" prop="everyStuLoseHour">
             <el-input-number v-model="form.everyStuLoseHour" class="auto-width" style="width: 100px" controls-position="right" :min="0" /> 课时
          </el-form-item>
        </el-col>
        </el-row>




        <el-form-item label="开班日期" prop="openDate">
          <el-date-picker clearable
                          v-model="form.openDate"
                          type="date"
                          value-format="yyyy-MM-dd"
                          placeholder="请选择开班日期">
          </el-date-picker>
        </el-form-item>
        <el-form-item label="结班日期" prop="closeDate">
          <el-date-picker clearable
                          v-model="form.closeDate"
                          type="date"
                          value-format="yyyy-MM-dd"
                          placeholder="请选择结班日期">
          </el-date-picker>
        </el-form-item>
        <el-form-item label="备注" prop="memo">
          <el-input v-model="form.memo" placeholder="请输入备注" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listCla, getCla, delCla, addCla, updateCla } from "@/api/system/cla";
import {listTeacher as teacherSelect} from '@/api/system/teacher'
import {listTeachers as selectTeacher} from '@/api/system/teacher'
import {listCourse as CourseSelect} from '@/api/system/course'
export default {
  name: "Cla",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 课程班级信息表格数据
      claList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        coursename: null,
        name: null,
        claName: null,
        openDate: null,
      },
      // 表单参数
      form: {
        claColor: '#409EFF'
      },
      // 表单校验
      rules: {
        courseId: [
          { required: true, message: "课程不能为空", trigger: "blur" }
        ],
        staffId: [
          { required: true, message: "教师不能为空", trigger: "blur" }
        ],
        claName: [
          { required: true, message: "班级名称不能为空", trigger: "blur" }
        ],
        claColor: [
          { required: true, message: "班级颜色不能为空", trigger: "blur" }
        ],
        capacity: [
          { required: true, message: "人数不能为空", trigger: "blur" }
        ],
        everyStuLoseHour: [
          { required: true, message: "每次上课学生扣除课时不能为空", trigger: "blur" }
        ],
        openDate: [
          { required: true, message: "开班日期不能为空", trigger: "blur" }
        ],
        closeDate: [
          { required: true, message: "结班日期不能为空", trigger: "blur" }
        ],
      },
      // 教师
      teacherOptions:[],
      // 科目
      courseOptions:[]
    };
  },
  created() {
    this.getList();
    this.getTeacherOptions()
    this.getCourseOptions()
  },
  props: {
    colorArray: {
      type: Array,
      default: function() {
        return ['#409EFF', '#67C23A', '#E6A23C', '#F56C6C']
      }
    }
  },
  methods: {

    handleStudentChange(val) {
      const selectedCourse = this.courseOptions.find(course => course.courseid === val);
      selectTeacher(selectedCourse).then(
        response => {
          this.teacherOptions = response.data;
        }
      )
    },
    /** 查询课程班级信息列表 */
    getList() {
      this.loading = true;
      listCla(this.queryParams).then(response => {
        this.claList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        claId: null,
        courseId: null,
        staffId: null,
        claName: null,
        claColor: '#409EFF',
        capacity: null,
        everyStuLoseHour: null,
        openDate: null,
        closeDate: null,
        memo: null,
        createUser: null,
        createTime: null,
        lastUpdateUser: null,
        lastUpdateTime: null
      };
      this.resetForm("form");
    },

    getTeacherOptions() {
      teacherSelect().then(response => {
        this.teacherOptions = response.rows;

      })
    },
    getCourseOptions() {
      CourseSelect().then(response => {
        this.courseOptions = response.rows;


      })
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.claId)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加课程班级信息";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const claId = row.claId || this.ids
      getCla(claId).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改课程班级信息";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.claId != null) {
            updateCla(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addCla(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const claIds = row.claId || this.ids;
      this.$modal.confirm('是否确认删除课程班级信息编号为"' + claIds + '"的数据项？').then(function() {
        return delCla(claIds);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('system/cla/export', {
        ...this.queryParams
      }, `cla_${new Date().getTime()}.xlsx`)
    }
  }
};
</script>
<style >

.input-with-color-picker-container {
  position: relative;
}

.input-with-color-picker-container .el-color-picker {
  width: 40px;
  position: absolute;
  right: 0px;
}

.input-with-color-picker-container .el-input.el-input--medium{
  padding-right: 42px;
}
.auto-width{
  width: 1px;
}
</style>
